TY  - RPRT
TI  - Defining behavioral contrast for multiple schedules.
AU  - F K McSweeney
AU  - W D Norman
PY  - 1979
DO  - 10.1901/jeab.1979.32-457
UR  - https://pubmed.ncbi.nlm.nih.gov/16812157/
ID  - 16812157
ER  -